Here's another option to securing your barrel to the hop up for those of you who do not have a vise of some kind. Make a groove behind the brass collar and install either an o-ring or a c-clip to secure the barrel in place. I'm not really sure why KWA did not do this originally, I'm guessing just an oversight.

Here's another option to securing your barrel to the hop up for those of you who do not have a vise of some kind. Make a groove behind the brass collar and install either an o-ring or a c-clip to secure the barrel in place. I'm not really sure why KWA did not do this originally, I'm guessing just an oversight.

A pipe cutter will not leave a wide enough groove for a c-clip, let alone an o-ring, and you run the risk of accidentally cutting too deep with it and then you have a 2" barrel. A dremel with a thin metal cutting wheel is your best bet. The idea is to remove material from the outside of the barrel without deforming the inside of it. And by all means boobie, you are very welcome to it. I hope this works for everyone having jamming and double feed issues.

A pipe cutter will not leave a wide enough groove for a c-clip, let alone an o-ring, and you run the risk of accidentally cutting too deep with it and then you have a 2" barrel. A dremel with a thin metal cutting wheel is your best bet. The idea is to remove material from the outside of the barrel without deforming the inside of it. And by all means boobie, you are very welcome to it. I hope this works for everyone having jamming and double feed issues.

As long as there is enough room to push everything back in this fix should work well

When I saw that groove I thought of how you can cut a pipe in a table saw. The groove being the size of the blades kerf.

Holding the barrel in a jig over where the blade goes, raise the blade, through your jig (thats right cut a slot in your jig) to kiss the barrel, then rotate the barrel to circumscribe the barrel. It would help if the barrel was pinned on one side to control where the slot will be cut. .

Goodluck with that pipe cutter..you'll have a jamming issue for sure after using that..

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The barrels' ID don't noticeably deform when you run the tool on them. The materiel is push toward the sides and away. You would just need to clean up the OD of the barrel. I have been running my CQB barrel for a while with no problem (all I did after the cut was debur).

The barrels' ID don't noticeably deform when you run the tool on them. The materiel is push toward the sides and away. You would just need to clean up the OD of the barrel. I have been running my CQB barrel for a while with no problem (all I did after the cut was debur).

Good luck..remember. you're not completely cutting the barrel in half..so there is no way to debur the inside of your inner barrel after you run the pipe cutter around. I highly suggest you folks don't.

Good luck..remember. you're not completely cutting the barrel in half..so there is no way to debur the inside of your inner barrel after you run the pipe cutter around. I highly suggest you folks don't.

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I will second that! The pressure from the pipe cutter most likely will deform the inner diameter of the barrel.